Severity
Incident
Was Hydrogen Released?
Yes
Was There Ignition?
No
Describe the incident, including corrective steps taken and their result.
Incident Synopsis
While disconnecting a liquid H2 fill line from a liquid H2 trailer, liquid H2 escaped, burning a second man who was holding the hose. The man was burned on his hands and on his stomach.
Cause
The liquid H2 shut off valve was partially open, but both men assumed it was closed. Prescribed clothing was being worn.
Lessons Learned
Standard procedure must be followed in all cases. Assumptions are made at great risk. Risk also increases with complacency.